mhealth Summit - Alastair van Heerden

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Powerpoint slides of Alastair van Heerden's oral presentation at the mHealth summit. Washington 2010

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  • Of the 2 023 18-year-old BT20 participants who took part in the survey, 69% reported owning a mobile phone. In comparison, only 43.3% had access to a landline at home; a smaller number, 64%, reported having a South African identity book! Of the 31% who did not own a mobile phone, almost two thirds reported feeling socially isolated due to their lack of phone ownership. A mere 16 young people reported not wanting a mobile phone.
    As a group, no gender difference was found in how adolescents choose their phone - 59.8% selected it on functionality, followed by 38% who made the decision based on the phone’s styling. Only 8% choose a phone primarily based on price. As has been found in other studies, the majority of the sample (86.3%) reported being on a pay-as-you go plan; fewer than 10% had a contract with one of the cellular network service providers.
    With respect to phone usage, the top three most used features of phones were listening to music (78.6%), SMSing (74.8%) and taking photographs (72.5%). Although there was no gender difference between the number of calls and the number of photographs taken per day, an independent sample t-test revealed that girls sent more SMSs per day than boys (t= -2.028, p < 0.05). Unexpectedly, gender differences were reversed with respect to reports that mobile phones gave the owner a sense of feeling safe, with more boys than girls associating mobile phones with safety (χ2 (2, N = 1285) = 25.35, p < .01).

  • mhealth Summit - Alastair van Heerden

    1. 1. Human Sciences Research Council (South Africa) Message delivery failed: Opportunities and challenges facing the collection of mHealth data from a cohort of young adults in South Africa. Alastair van Heerden
    2. 2. Introduction
    3. 3. Available at: www.slideshare.net/CYFSD Conference Backchannel #: Birth to Twenty • Longitudinal cohort study • Based in Soweto-Johannesburg • Enrolled newborns and their families • Track child health, growth & development mhs10
    4. 4. Available at: www.slideshare.net/CYFSD Conference Backchannel #: Unique cellular phone access in SA
    5. 5. Available at: www.slideshare.net/CYFSD Conference Backchannel #: Dual Citizenship 69% 64%
    6. 6. Available at: www.slideshare.net/CYFSD Conference Backchannel #: SA population access to: mhs10
    7. 7. Method
    8. 8. Available at: www.slideshare.net/CYFSD Conference Backchannel #: Study Design • Pilot Study • Cross-Sectional Design mhs10 0% 25% 50% 75% 100% Female, 227 Male, 208 Black 89% White 7% Coloured 3% Asian 1% • N = 435 • Median Age of 20yrs
    9. 9. Available at: www.slideshare.net/CYFSD Conference Backchannel #: Procedure mhs10 SMS Notification Network Connection Survey Download Take Survey Upload Response Rollout & Training Receipt Notification
    10. 10. Results
    11. 11. Available at: www.slideshare.net/CYFSD Conference Backchannel #: Pre-Survey Findings mhs10 MPs purchased MPs purchased 1000 Distributed Phones 996 (4) Deleted App 964 (32) Installed new SIM 939 (25) Lost or Stolen 734 (205) Random Sample 435
    12. 12. Available at: www.slideshare.net/CYFSD Conference Backchannel #: Survey 1 (n=435) mhs10 Working Phones 288 (66%) Response (2wks) Tutorial 216 Survey 1 103 Unique Response 104 (36%) 91 (32%) PPT in sample Yes 71 No 33 Yes 67 No 24
    13. 13. Available at: www.slideshare.net/CYFSD Conference Backchannel #: Average Response Rates mhs10 Sample (n=435) Working Phone Unique 26.8% 40.5% Correct survey 14.0% 21.2%
    14. 14. Available at: www.slideshare.net/CYFSD Conference Backchannel #: Survey Response Characteristics • Mean Survey Time of 19min • Mean Break Off Rate of 4% • 5% of items skipped • Numeric most frequently skipped • Multi choice least frequently skipped • 70% completed survey at home • 93% were completed in the presence of others
    15. 15. Discussion
    16. 16. Available at: www.slideshare.net/CYFSD Conference Backchannel #: Application Value mhs10 • TAM - Davis (1986) • Reduce critical steps • Survey App as part of a larger ecosystem
    17. 17. Available at: www.slideshare.net/CYFSD Conference Backchannel #: Delivery Mode mhs10 • App vs. SMS vs. USSD • Fluidity of handsets • Motivating participation

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